SDS Volume

Volume 38. Hydrocarbons in Water and Seawater, Part II, p None

Source Publication

Sanemasa, I.; Araki, M.; Deguchi, T.; Nagai, H.; Bull. Chem. Soc. Jpn. 1982, 55, 1054-62.

Conditions:

Room Temp: 15 - 45 °C

Compiler:

G.T. Hefter

Methodology:

The apparatus is similar to an earlier design [2] and is described in detail in the paper. 100-200 mL of [2] and 10-20 mL of liquid [1] were placed in separate but connected thermostatted flasks. After thermal equilibrium was established a recirculating stream of air was used to vaporize liquid [1] and to transport the vapor to the flask containing [2]. Five 10 mL aliquots were withdrawn into separatory funnels. The concentration of [1] in [2] was then determined by extraction into chloroform followed by UV-spectrophotometry. Standards for the spectrophotometry were prepared by weight from pure liquid solutes.

Sample Information:
  1. Analytical reagent grade (Wako Pure Chemical Ind. Ltd.), stated purity 98.0%, used without further purification.
  2. Redistilled; no further details given.
Measurement Errors:

Ambient temperature: ±0.1°C
Mass concentration (m/v) (1): see table, type of error not specified.

Methodology Citations

1 Kell, G. S.; J. Chem. Eng. Data 1975, 20, 97.
2 Sanemasa, I.; Araki, M.; Deguchi, T.; Nagai, H.; Chem. Lett. 1981, 225-8.

System Components:
  1. 1,2-Dimethylbenzene, $\ce{ C8H10 }$; [95-47-6] NIST WebBook
  2. Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data
$T$ (°C) $C_{1}$ (mol/dm3) $x_{1}$ MR1 (g1/100 g sln)
15 1.58 x 10-3 2.85 x 10-50.0168
25 1.68 x 10-3 3.04 x 10-50.0179
35 1.85 x 10-3 3.35 x 10-50.0198
45 2.00 x 10-3 3.64 x 10-50.0214

(a) Assuming solution densities to be the same as those of pure water at the same temperature (ref 1).

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